202121029993 has 8 divisors (see below), whose sum is σ = 213641801120. Its totient is φ = 190688541120.

The previous prime is 202121029973. The next prime is 202121030003. The reversal of 202121029993 is 399920121202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202121029993 - 2¹³ = 202121021801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202121029973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22065855 + ... + 22075012.

It is an arithmetic number, because the mean of its divisors is an integer number (26705225140).

Almost surely, 2^202121029993 is an apocalyptic number.

It is an amenable number.

202121029993 is a deficient number, since it is larger than the sum of its proper divisors (11520771127).

202121029993 is a wasteful number, since it uses less digits than its factorization.

202121029993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44141127.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 202121029993 in words is "two hundred two billion, one hundred twenty-one million, twenty-nine thousand, nine hundred ninety-three".